The Broncos and their defensive coordinator agreed to terms Thursday on a new two-year contract. The deal is expected to be finalized Friday.

"Jack did a nice job with our defense," said John Elway, the Broncos' executive vice president of football operations. "We had a lot of injuries on that defensive side and Jack did a good job holding that side together. Even in the Super Bowl, our defense kept us in the game in the first half."

It wasn't long ago that defensive coordinator was the Broncos' least stable coaching position as they went through seven in seven years from 2006 until Del Rio's arrival in 2012.

Del Rio previously had been a nine-year head coach with the Jacksonville Jaguars. When Broncos head coach John Fox went down with open-heart surgery in November, Del Rio went 3-1 as interim coach.